Protection structure and a fan thereof

Abstract

A fan includes a fan frame, a rotor, a stator module and a protection structure. The fan frame has a base seat and the stator module is disposed on the base seat. The stator module includes a silicon steel sheet assembly having multiple splits and multiple outer faces. The rotor is disposed in the fan frame corresponding to the outer faces of the silicon steel sheet assembly. The protection structure includes multiple posts corresponding to the splits of the silicon steel sheet assembly. The posts are welded with the splits by means of laser welding.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to a protection structure and a fan thereof, and more particularly to a stator module with protection structure and a fan thereof.[0003]2. Description of the Related Art[0004]It is known that various fans are widely applied to all kinds of devices or sites, for example, personal computers, servers, storage devices, communication apparatuses, power supplies, vehicle industries, industrial control instruments, medical equipments, shipping equipments, air-conditioners and other industrial apparatuses.[0005]A conventional fan stator includes a silicon steel sheet assembly, multiple windings, a circuit board and other electronic components. These components are exposed to air in contact with the vapor or dust in the air. Therefore, short-circuit may take place to these components to cause damage thereof due to humidity. In some more serious cases, these components may burn out and fail...

AI Technical Summary

Benefits of technology

[0012]It is therefore a primary object of the present invention to provide a protection structure and a stator module thereof and a fan thereof. The outer faces of the silicon steel sheet assembly are exposed to outer side without enlarging the gap between the rotor and the silicon steel sheet assembly. Therefore, the power performance of the motor will not be affected.

[0013]It is a further object of the present invention to provide the above protection structure and the stator module thereof and the fan thereof. The electronic components are free from the affection of thermal stress of the sealing adhesive so that the electronic components are prevented from being damaged.

[0014]It is still a further object of the present invention to provide the above protection structure and the stator module thereof and the fan thereof, in which the electronic components are isolated from humidity and salty fog. Moreover, the heat dissipation effect is better.

Problems solved by technology

Therefore, short-circuit may take place to these components to cause damage thereof due to humidity.

In some more serious cases, these components may burn out and fail.

This will affect the operation of the electronic device.

This leads to increase of the distance between the stator and the rotor.

The adhesive dispensing process costs long time and it is hard to control the amount of the adhesive so that the adhesive is likely to spill.

After a period of use, the O-ring tends to crack.

Moreover, it takes long time to wait for solidification of the sealing adhesive.

In addition, during solidification process, the adhesive will apply a stress to the electronic components due to thermal change.

This is likely to cause malfunction of the electronic components.

After the sealing adhesive is filled into the cover body, it is impossible to check the condition of the sealing adhesive inside the cover body.

This leads to probability of infiltration.

Moreover, after sealed by the adhesive, the heat dissipation effect of the windings and the silicon steel sheets and electronic components of the stator will be deteriorated.

This will cause rise of temperature of the stator.3. Sealing adhesive protection.

There are still the above problems existing in the sealing adhesive.

In addition, after injected, it is impossible to check whether the components are displaced due to the injection pressure.4. Coating protection.

The coating coated on the stator and other electronic components is quite thin and is likely to be damaged by alien article in the manufacturing process or during transfer.

Moreover, the material of the stator and other electronic components will affect the surface adhesion of the coating or deteriorate the adhesion effect thereof.

At high temperature, the coating may blister and damage.

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